#2B4872
Closest named color: Twilight Blue (#0A437A). oklch(40% 0.08 257.6), rgb(43, 72, 114).
Aa
White text reads best on this color (9.24:1).
About this color
#2B4872 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.080 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.036 away. White text reads best on it, at 9.24:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #2B4872 |
| RGB | rgb(43, 72, 114) |
| HSL | hsl(215, 45%, 31%) |
| OKLCH | oklch(40% 0.08 257.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2B4872 | 9.24:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #2B4872 | 2.27:1 | Fails | Lc 12.8 | Not readable |
| #2B4872 text on white | 9.24:1 | AAA | Lc 91.2 | Preferred for body text |
| #2B4872 text on black | 2.27:1 | Fails | Lc -11.2 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7BA2DC
oklch(70.6% 0.096 258.1)
-
Step 500
500
#588AD2
oklch(63% 0.122 257.5)
-
Step 600
600
#3D73BF
oklch(55.6% 0.132 257.3)
-
Step 700
700
#2F60A5
oklch(49.1% 0.123 257.4)
-
Step 800
800
#284F86
oklch(42.8% 0.102 257.3)
-
Step 900
900 (this color)
#2B4872
oklch(40% 0.08 257.6)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#2B4872 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #364B74 | 0.018 |
| Deuteranopia (no green cones) | #2D4471 | 0.012 |
| Tritanopia (no blue cones) | #005157 | 0.068 |
| Achromatopsia (no color) | #474747 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4872
#2B4872
oklch(40% 0.08 257.6)
- #5F4107
#5F4107
oklch(39.9% 0.08 77.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2B4872, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.036
- Light Navy #155084 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.043
- Cobalt #1E488F ΔE 0.050
- Dusk Blue #26538D ΔE 0.050
- Charcoal #264653 ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.060
Use #2B4872 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.